WO1994004265A1 - Transducteur avec membrane de cavitation hautement performante - Google Patents

Transducteur avec membrane de cavitation hautement performante Download PDF

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Publication number
WO1994004265A1
WO1994004265A1 PCT/DK1993/000263 DK9300263W WO9404265A1 WO 1994004265 A1 WO1994004265 A1 WO 1994004265A1 DK 9300263 W DK9300263 W DK 9300263W WO 9404265 A1 WO9404265 A1 WO 9404265A1
Authority
WO
WIPO (PCT)
Prior art keywords
transducer
cavitation
membrane
sound
head
Prior art date
Application number
PCT/DK1993/000263
Other languages
English (en)
Inventor
Claus Resen Steenstrup
Per Resen Steenstrup
Jens Resen Steenstrup
Michael Christian Lyngelsen
Hans H. Haraldsted
Original Assignee
Reson System A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reson System A/S filed Critical Reson System A/S
Priority to AU46988/93A priority Critical patent/AU4698893A/en
Publication of WO1994004265A1 publication Critical patent/WO1994004265A1/fr

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations

Definitions

  • the invention relate to a high effective ultra sound transducer for transmitting frequencies from 20-100 KHz, used especially in connection with operations of homo ⁇ genizing as cleaning operations.
  • Hithertho is known ultra sound transducers used before abovementioned area, where one have made the transmitting head and especially the aera of the transmitter front in metal as an example aluminium as stainless steel.
  • the disadvantage has in connection with formed cavitation in the surrounding liquid at and from the area of the transmitter front done, that the always formed air bubbles of cavitation with often an air pressure up to
  • the purpose with the invention is to eliminate hithertho known problems especially the corrosions there have been made in connection with cavitation, when an equipment of abovementioned sort has been used.
  • the purpose with the invention is further to eliminate till then now known problems, especially destroying vi ⁇ brations on the materials and theirs connection, there have been arisen on the equipment itself, when this has been used.
  • the purpose is also in an alternative embodyment, to make use of the new vibration free attachment to one in its own integrated multy transducer, there especially in effect will bee self strengthen and be able to obtain results, there are better than untill now known for a simple equipment.
  • the elastic material of membrane will more over also done or made an extra springy push on the sound waves and of this movement in the liquid in front of the transducer, as the transducer got an extra powerfull energy of pushing via the elastic, but still acoustics transparent membrane of cavitation.
  • the system in working function can roughly be compared with the modern technology swiping rod used at the fishing, where a retared swip of the swiping rod because of the stored energy do that the line with the fish-hook is flying longer.
  • the ultra sound transducer be mounted as a row of single transducers into a joint battery, and in a watertight box, where the single transducer is flowing and elastic hung and fixed via a common membrane of cavitation front, which again can be fixed or ideal vulcanized to the edge of the front of the battery as firm supporting and front flat.
  • the single ultra sound transducer in battery as single arrangment be fluent hung and tightend via a movable arrangment of 0-ring in the front of the transmitter head and with a relative possibility of stroke in the direction of the cylinder head.
  • Fig.l shows a high-effective ultra sound transducer in section
  • Fig.2 shows a battery of ultra sound transducers in section
  • Fig.3 shows a single transducer in a box, with membrane of cavitation
  • Fig.4 shows a transducer in a box, hung fluent via a system of 0-ring,
  • Fig.5 shows a transducer with exchangeable front part
  • Fig.6 shows an alternative fluent hanging com- binated with an exchangeable membrane of the front part
  • Fig.7 shows an integrated double transducer
  • Fig.8 shows a head transducer with an integrated system of transducers.
  • Fig.l shows a high effective ultra sound transducer 2,3 and 4 in section, where the front of the sound 2 or the head plate 2 is covered 6 on the transmitter side 2 with an elastic membrane of cavitation 6.
  • the ultra sound transducer 2,3 and 4 form an ultra- sound 1 via two fixed piezo-crystals 3, where there between the parts are lain an electrical conducting foil 8 and 8' , where there are transmitted a voltage.
  • the foil 8 and 8' and the front 2 as the back 4, which here is a block 4 with high density, has been glued together as an example a glue of epoxy.
  • the system 2,3 and 4 has been pressed and fixed further as an example via a stem bolt 5, which squeeze the front and the transmitter head 2 as the mass bach head tight, especially airtight together.
  • the front-and the transmitter head 2 can be made of a metal with low density as an example aluminium, where opporsite the back 4 or the block 4 of the sound counter end can be made in a material with high density as an example brass.
  • Ideal can the thickness 7 of the material of membrane 6 be 3/4 of the wave-length of the transmitting. But other ideal thickness 7' could also be thought, dependent of the purpose of the user as the total construction of the transducer 2,3 and 4.
  • the hardness of the elastic material 6 can as an example into specially cleaning purposes ideal been lain on about 70 shore.
  • the material of membrane 6 can ideal as an example be made of rubber of nitrit.
  • Fig.2 shows a battery of ultra sound transducers 2, 3, 4 and 9 in section, where the transducers 2', 3' and 4' here are equiped with a common membrane of cavitation 6 with a back supporting plate 9', and where the battery of transducers 2' , 3' and 4' totally as the transducers 2 , 3 and 4 separately are hung fluent 10 with a trans- fered edge of membrane of cavitation 10.
  • the membrane of cavitation 6 for each single head of transducer 2 , 3 and 4 equiped with a guiding band -or blonde 10' along the front edge on the transmitter head 2 and on each transducers 2 , 3 and 4.
  • Fig.3 shows a single transducer 2 , 3 and 4 in box 9 with membrane of cavitation 6.
  • the front plate 2 or the area 2' not here be corroded of bubbles of cavitation, but the system 2 , 3 and 4 as 6 will on the contrary both protect the transmitter head 2 as highten and extra turn forward the energy 1 of the cleaning bubbles of cavitation, as the generally sound energy 1 in the liquid.
  • the membrane of cavitation 6 is here made like the membrane of cavitation 6 for the battery transducer 2' , 3' and 4' .
  • the membrane of cavitation 6 could even also have other optimum designs 6 as 7' and varying thickness 7 as an example concave as convex, and fitted to the front of sound transmitter 1 or the picture 1' from the transmit ⁇ ter section 2.
  • Alternative could the surface on the membrane of cavitation 2 be made with a spot pinches surface, for partly to be able to spread the sound-waves 1 in different directions.
  • the membrane of cavitation 2 could even too be made as sound speaker funnel, where the sound picture 1' inside the area would be highten if necessary via also fitting to the resonance as fitting to the material of the membrane and so on.
  • Fig.4 shows a transducer 2 , 3 and 4 in a box 9, hung fluent 10 as 11 via a system of 0-rings 11, where membrane of the cavitation 6 cover the transmitter front 2' on the head of the transducer 2.
  • the 0-ring 11 can be elastic fixed 11 to the box of the transducer 9 via as an example an 0-ring turned groove 11' in the house 9 as a turned groove 2' in the trans ⁇ mitter head 2 on the transducer 2 , 3 and 4.
  • the 0-ring 11 could moreover further be fixed in the grooves via a gluing in each groove, as an example via contact-glue or another glue there stand the high ultra sound.
  • Fig.5 shows a transducer 2, 3 and 4 with exchan- geabel 2' transmitter front 2, as the transmitter front
  • the membrane of cavitation 6 on the transmitter front 2' can be vulcanized on the front area 2' , as strenghten also up along the sides 6' and short around on the back 6".
  • Fig.6 shows an alternative fluent hang 10 as 12 combinated with an exchangeable front membrane 6, as the fluent hang 10 can be fixed between the front plate of the membrane 2' and the body of the transmitter head 2.
  • the plate of the membrane front 2' can be fixed to the transmitter head 2 as mentioned under Fig.5.
  • the exchangeable plate of the front membrane 2'as 6 the advantage, that the membrane 6 in its thick ⁇ ness 7 as according to its property of the material can be fitted 7' to the actual situation of operation 1".
  • the membrane 6 in its thick ⁇ ness 7 as according to its property of the material can be fitted 7' to the actual situation of operation 1".
  • Fig.7 shows an integrated 12' double transducer
  • the leadery transducer 2' , 3' and 4' have the ad ⁇ vantages 1' of work, that it 2', 3'and 4' will swing according to the sound 1' and relative in stroke 1 with the head transducer 2, 3 and 4, by which a supplying ultra sound transmitting 1" from the depoty transducer 2', 3'and 4' either in the same frequency 1 or in another to the purpose fitted frequency 1', will be highten.
  • the front of the sound 1, which the big primary transducer 2, 3 and 4 transmit 1 also be more optimum, as a differentiated sound column 1 as 1' will be more optimum, than a single equal column of sound 1.
  • Fig.8 shows a head transducer 2, 3 and 4 with an integrated system of transducers 13, where the intermediary transducers 13 have been lain in ring in the transmitter front 2 of the head transducers 2, 3 and 4.
  • the depoty transducers 13 can here either work together with the same frequency, or they can transmit with mutual different frequencies.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

L'invention se rapporte à un transducteur ultrasonore hautement performant (2, 3 et 4) en particulier pour les fréquences émettrices (1) comprises entre 20 et 100 KHz, qui est plus particulièrement utilisé en rapport avec des opérations d'homogénéisation et des opérations de nettoyage et dont la partie frontale en métal et la tête de la partie plane émettrice (2) sont recouvertes (6) d'une membrane de cavitation (6), laquelle est élastique et se caractérise par sa transparence acoustique. Le transducteur (2, 3 et 4) peut en outre être monté sous la forme d'une rangée simple de transducteurs dans une batterie commune (2', 3' et 4') et dans une boîte étanche à l'eau (9). Les transducteurs individuels (2, 3 et 4) peuvent être suspendus de manière mobile et élastique (10) et fixés (10) par l'intermédiaire d'une membrane commune de cavitation (6'), laquelle peut à son tour être fixée ou, de préférence, être vulcanisée au bord de la partie frontale (9) de la batterie ainsi qu'à la tête et à une plaque stable de support et de transmission (9').
PCT/DK1993/000263 1992-08-18 1993-08-13 Transducteur avec membrane de cavitation hautement performante WO1994004265A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46988/93A AU4698893A (en) 1992-08-18 1993-08-13 Transducer with high effective membrane of cavitation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK102592A DK102592A (da) 1992-08-18 1992-08-18 Transducer med kavitationsmembran
DK1025/92 1992-08-18

Publications (1)

Publication Number Publication Date
WO1994004265A1 true WO1994004265A1 (fr) 1994-03-03

Family

ID=8100143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1993/000263 WO1994004265A1 (fr) 1992-08-18 1993-08-13 Transducteur avec membrane de cavitation hautement performante

Country Status (3)

Country Link
AU (1) AU4698893A (fr)
DK (1) DK102592A (fr)
WO (1) WO1994004265A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999057526A2 (fr) * 1998-05-07 1999-11-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transducteur ultrasonore
EP1482028A1 (fr) * 2002-03-01 2004-12-01 Ngk Insulators, Ltd. Cellule de reaction et procede d'utilisation de ladite cellule
WO2005115602A1 (fr) * 2004-05-24 2005-12-08 Dr. Hielscher Gmbh Procédé et dispositif permettant de faire pénétrer des ultrasons dans un milieu coulant
KR100851942B1 (ko) * 2004-05-24 2008-08-12 독토르 힐셔 게엠베하 유동성 매체 내부로 초음파를 도입하기 위한 방법 및 장치

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934031B1 (de) * 1979-08-02 1980-10-09 Landis & Gyr Ag Ultraschallwandler
DE3600639A1 (de) * 1986-01-11 1987-07-23 Bopp & Reuther Gmbh Ultraschallwandler
DE4006718A1 (de) * 1989-03-07 1990-09-13 Mitsubishi Mining & Cement Co Piezoelektrischer wandler
WO1990014170A1 (fr) * 1989-05-15 1990-11-29 E.I. Du Pont De Nemours And Company Capteur a ultrasons
EP0449008A2 (fr) * 1990-03-28 1991-10-02 United Kingdom Atomic Energy Authority Dispositif sonochimique
DE4125088C1 (fr) * 1991-07-29 1992-06-11 Siemens Ag, 8000 Muenchen, De

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934031B1 (de) * 1979-08-02 1980-10-09 Landis & Gyr Ag Ultraschallwandler
DE3600639A1 (de) * 1986-01-11 1987-07-23 Bopp & Reuther Gmbh Ultraschallwandler
DE4006718A1 (de) * 1989-03-07 1990-09-13 Mitsubishi Mining & Cement Co Piezoelektrischer wandler
WO1990014170A1 (fr) * 1989-05-15 1990-11-29 E.I. Du Pont De Nemours And Company Capteur a ultrasons
EP0449008A2 (fr) * 1990-03-28 1991-10-02 United Kingdom Atomic Energy Authority Dispositif sonochimique
DE4125088C1 (fr) * 1991-07-29 1992-06-11 Siemens Ag, 8000 Muenchen, De

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999057526A2 (fr) * 1998-05-07 1999-11-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Transducteur ultrasonore
WO1999057526A3 (fr) * 1998-05-07 2000-03-16 Fraunhofer Ges Forschung Transducteur ultrasonore
EP1482028A1 (fr) * 2002-03-01 2004-12-01 Ngk Insulators, Ltd. Cellule de reaction et procede d'utilisation de ladite cellule
EP1482028A4 (fr) * 2002-03-01 2007-05-02 Ngk Insulators Ltd Cellule de reaction et procede d'utilisation de ladite cellule
US7341697B2 (en) 2002-03-01 2008-03-11 Ngk Insulators, Ltd. Reaction cell and operation method thereof
WO2005115602A1 (fr) * 2004-05-24 2005-12-08 Dr. Hielscher Gmbh Procédé et dispositif permettant de faire pénétrer des ultrasons dans un milieu coulant
KR100851942B1 (ko) * 2004-05-24 2008-08-12 독토르 힐셔 게엠베하 유동성 매체 내부로 초음파를 도입하기 위한 방법 및 장치
US8235579B2 (en) 2004-05-24 2012-08-07 Dr. Hielscher Gmbh Device for introducing ultrasound into a flowable medium

Also Published As

Publication number Publication date
DK102592D0 (da) 1992-08-18
AU4698893A (en) 1994-03-15
DK102592A (da) 1994-02-19

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